blender problem

hey guys
this is my first post here ( not sure if it is in the correct place)
im using my blender model in an xna project for animation
previous models have worked fine but i am getting an error with a model of a head

“Error normalizing vertex bone weights. BoneWeightCollection does not contain any weighting values.”

i have checked my model and as far as i am aware all vertex’s are attatched to the two bones i have added

could somebody please check for me or help me out? i would be very grateful
thanks in advance

http://www.mediafire.com/?awq8jv7wbfjvvzz here is my model file

( not sure if it is in the correct place)
Moved thread from Latest News to Support forum.

thank you :slight_smile: